📱Get a Phone Plan & SIM in Korea

ข้อมูลด่วน

Day one

Airport eSIM or prepaid SIM with passport only

Long-term

Postpaid plan needs Residence Card + payment method

Cheapest

MVNO (알뜰폰) plans on the major networks

Networks

SKT, KT, LG U+ (MVNOs resell these)

Why it matters

Number needed for bank OTP and app verification

eSIM

Instant activation on supported phones

ทีละขั้นตอน

1. 1

   Get connected on arrival

   Buy a prepaid SIM or eSIM at the airport or online before you land. You only need your passport, and it works immediately.

   • ▸eSIM activates without a physical card
   • ▸Choose a data amount that covers your first weeks
2. 2

   Decide prepaid vs postpaid

   Prepaid is flexible and passport-only. Postpaid is cheaper per month but requires a Residence Card and usually a Korean bank account or card.

   • ▸Stay on prepaid until your ARC arrives
   • ▸Postpaid makes sense once you are settled
3. 3

   Get your Residence Card

   A postpaid contract normally needs your Residence Card and a Korean payment method, so complete immigration registration first.

   • ▸Have your ARC and bank card ready before visiting a store
4. 4

   Compare MVNO plans

   Budget MVNO (알뜰폰) carriers use the same SKT/KT/LG U+ networks at much lower prices. Compare data, calls and contract length.

   • ▸MVNO SIM-only plans avoid device lock-in
   • ▸Check English support before signing
5. 5

   Sign up and verify

   Sign the plan in-store or online. Your new Korean number then lets you receive bank OTPs and verify apps like delivery and maps.

   • ▸Keep your number consistent across bank and government accounts
6. 6

   Set up essential apps

   With a verified number, register for banking, delivery, maps and messaging apps that power daily life in Korea.

   • ▸Link the number to your bank for OTP
   • ▸Update the number anywhere you registered a temporary SIM

คำถามที่พบบ่อย

Can I get a SIM with just my passport?

Yes — prepaid SIMs and eSIMs are available with only a passport, which is ideal for your first days before your Residence Card arrives.

What do I need for a postpaid plan?

Postpaid plans usually require your Residence Card and a Korean bank account or card for automatic payment.

What is an MVNO / 알뜰폰?

MVNOs are budget carriers that resell the SKT, KT and LG U+ networks at lower monthly prices, often as SIM-only plans.

Is eSIM available in Korea?

Yes, eSIM is widely supported and activates instantly on compatible phones — a convenient option on arrival.

Why do I need a Korean number so urgently?

Banks send OTP codes to Korean numbers, and most apps and deliveries require phone verification, so it is one of the first things to set up.

Can I keep my number when I switch to postpaid?

You can often port a prepaid number to a postpaid plan; confirm portability with the new carrier when you sign up.